#include<stdio.h>
#include<assert.h>
void* css(void* a,const void* b,size_t num)
{
	assert(a && b);
	void* c=a;
	while(num--)
	{
		*(char*)a=*(char*)b;
		a=(char*)a+1;
		b=(char*)b+1;
	}
	return c;
}
int main()
{
	int b[]={1,2,3,4,5,6,7,8,9,0};
	int a[10];
	css(a,b,40);
	for(int i=0;i<10;i++)
	{
		printf("%d ",a[i]);
	}
	return 0;
}
